The Himalayan marmot is a marmot species that inhabits alpine grasslands throughout the Himalayas and on the Tibetan Plateau. It is IUCN Red Listed as Least Concern because of its wide range and possibly large population.
Taxonomy
Arctomys Himalayanus was the scientific name proposed by Brian Houghton Hodgson in 1841 who described marmot skins from the Himalayas. In the 19th century, several Himalayan marmot specimens were described and proposed as subspecies. The Himalayan marmot is very closely related to the Tarbagan marmot and somewhat more distantly to the—in morphology rather different—black-capped marmot. These three form a species group and its nearest relative is the bobak species group, which includes the bobak marmot itself, as well as the gray and forest-steppe marmots. In the past, the relatively short-furred and short-tailed marmots of the Palearctic region, i.e. Himalayan, Tarbagan, gray and forest-steppe, all were regarded as subspecies of the bobak marmot.
Characteristics
The Himalayan marmot has a dense woolly fur that is rufous grey on the back and rufous yellowish on ears, belly and limbs. The bridge of its nose and end of tail is dark brown. It is one of the largest marmots in the world, being about the size of a large housecat. Average body mass ranges from, with weights lowest post-hibernation in spring and highest prior to it in autumn. In the autumn, average weight is reportedly more than in both sexes. Total length is about, with a tail length of.
Distribution and habitat
The Himalayan marmot occurs in the Himalayas and Tibetan Plateau at altitudes of in northeastern Pakistan, northern India, Nepal, Bhutan and China. In China, it has been recorded in Xinjiang, Qinghai, Gansu, Xizang, western Sichuan and Yunnan provinces. In the west its distribution reaches that of the long-tailed marmot, but the two are not known to hybridize. The Himalayan marmot lives in short grass steppes or alpine habitats, typically above the tree line but below the permanent snow limit.
Ecology and behaviour
The Himalayan marmot lives in colonies and excavates deep burrows that colony members share during hibernation. The species hibernates from the late autumn to the early spring, on average for 7 months. Burrows are between deep, given that the upper soil layer is sufficiently light and deep such as fluvioglacial, deluvial and alluvial deposits. Where soil conditions are ideal on alluvial terraces, marmot colonies comprise up to 30 families, with up to 10 families living in an area of. The marmot eats plants growing on pastures, in particular the soft and juicy parts of grassy plant species like Carex, Agrostis, Deschampsia, Koeleria and flowering species like Euphrasia, Gentiana, Halenia, Polygonum, Primula, Ranunculus, Saussurea, TaraxacumIris potaninii.
